Thanomkhwan Thongprong. (2015) The comparison study of consumer behavior towards online travel agents (otas) between baby boomers, x & y generation in purchasing tourism related products and services. Stamford international university:ม.ป.ท.Thanomkhwan Thongprong. 2015. The comparison study of consumer behavior towards online travel agents (otas) between baby boomers, x & y generation in purchasing tourism related products and services. ม.ป.ท.:Stamford international university;Thanomkhwan Thongprong. The comparison study of consumer behavior towards online travel agents (otas) between baby boomers, x & y generation in purchasing tourism related products and services. ม.ป.ท.:Stamford international university, 2015. Print.